Parts
At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.
Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.
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On Sale
Thread Protector - .40 S&W - 9/16x24 RH - Steel
HKP HK Parts
Now: $16.95Was: $19.95HKP .40 S&W Thread Protector - 9/16x24 The New Style .40 Caliber Tactical Thread Protector is an essential accessory designed to safeguard your HK .40 caliber pistol's threaded barrels. Perfectly...HKP-18145Now: $16.95Was: $19.95 -
HK USP, USP Tactical Lanyard Loop Insert - .45 ACP
H&K Heckler & Koch
$18.95HK USP/Tactical .45 ACP Lanyard Loop Insert This item does not have the lockout device installed for those who prefer not to have this device on their firearm.HKP-02385$18.95 -
HK USP Retainer Roll Pin, Buffer Spring - .45 ACP
H&K Heckler & Koch
$7.95HK USP .45 ACP Buffer Spring Retainer Roll PinHKP-02267$7.95 -
On Sale
HK USPC Light and Laser Combo - TLR-4 - Green
Streamlight
Now: $191.22Was: $299.95Streamlight TLR-4 Light and Laser - Green for HK USPC Features: White LED with Green Laser Ultra lightweight and compactHKP-16917Now: $191.22Was: $299.95 -
HK416 A3 Handguard - Flip Up Sight - 11" - Extended
H&K Heckler & Koch
$799.95Heckler and Koch Extended Forearm with Integrated Flip Up Front Sight for HK 416 A3 HK designed and manufactured in Germany 11" HK416 A5, MR556 extended quad rail. This drop-in unit offers 2 full...HKP-17377$799.95 -
HK USC, SL8 Buttstock Allen Screw
H&K Heckler & Koch
$17.95Buttstock Allen Screw For HK USC Or HK SL8 rifles. This is the screw that holds the stock assembly onto the upper receiver of the HK USC & SL8.Great for replacements or to have as spares. This item...HKP-01649$17.95 -
HK UMP Magazine - 30 Round - .40 S&W
H&K Heckler & Koch
$79.95HK Heckler and Koch German .40 S&W 30 Round Factory Magazine for HK UMP New factory fresh production HK magazine. Compatible With: HK UMP .40HKP-00607$79.95 -
On Sale
HK21E, HK11E Firing Pin - Titanium
HKP HK Parts
Now: $31.84Was: $49.95HK21E, MM21E, 11E Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made in the USA. A must have upgrade to have on hand as the firing pin is one of the most abused components in...HKP-17771Now: $31.84Was: $49.95 -
HK91, G3 Trigger Group - Burst 4 Position 0,1,3,F - Push Pin
H&K Heckler & Koch
$3,299.95HK Heckler and Koch 4 Position Burst Trigger Group - for HK G3, HK91, and HK PTR - German HK HK G3 and HK91 4 Position 0,1,3,F burst trigger group is complete factory German. Rare and hard to find...HKP-00208$3,299.95 -
Out Of Stock
HK33, HK53, HK93 Bolt Carrier - Full Auto - Buffered Style - Used
H&K Heckler & Koch
$345.95HK German production HK German HK33, 33K, 93 Full Auto Bolt Carrier Used Buffered Style Hard to find, vintage HK German buffered style F/A bolt carrier. Perfect for a spare or to upgrade your clone...HKP-16455$345.95 -
Out Of Stock
HK MP5 Barrel - 9mm - Threaded 1/2x28 with 3 Lug - Navy - US
HKP HK Parts
$179.95HKP MP5 9mm Navy Barrel - Threaded 1/2x28 - 3-Lug High quality, US-made MP5-N barrel. Built to last and finished in resilient nitride. Precision milled to the latest specs with the factory correct...HKP-17926$179.95 -
HK MP5 Rear Receiver Section
H&K Heckler & Koch
$14.95H&K MP5 Rear Receiver Section HK German demilled receiver section with rear sight base as installed at the factory. MP5 & HK94 Factory HK rear sight bases (portion welded to MP5 receiver), you get...HKP-02167$14.95